<?php
// +----------------------------------------------------------------------
// | Yzncms [ 御宅男工作室 ]
// +----------------------------------------------------------------------
// | Copyright (c) 2018 http://yzncms.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 御宅男 <530765310@qq.com>
// +----------------------------------------------------------------------

// +----------------------------------------------------------------------
// | 接口管理
// +----------------------------------------------------------------------
namespace addons\apidoc\controller;

use think\addons\Controller;

class Index extends Controller
{
    protected $config = [
        'title'           => 'APi接口文档',
        'copyright'       => 'Powered By YznCMS',
        'controllers'     => [
        ],
        'versions'        => [
        ],
        'groups'          => [],
        'with_cache'      => false,
        'responses'       => '{
            "code":"状态码",
            "message":"操作描述",
            "data":"业务数据",
            "timestamp":"响应时间戳"
        }',
        'global_auth_key' => "Authorization",
        'auth'            => [
            'with_auth'     => false,
            'auth_password' => "123456",
            'headers_key'   => "apidocToken",
        ],
        'definitions'     => "hg\apidoc\Definitions",
        'filter_method'   => [
            '_empty',
        ],
    ];

    public function index()
    {
        return $this->fetch();
    }

    /**
     * 获取配置
     * @return array
     */
    public function getConfig()
    {
        $config       = config('apidoc') ? config('apidoc') : config('apidoc.');
        $this->config = array_merge($this->config, $config);
        if (!empty($this->config['auth'])) {
            $this->config['auth'] = [
                'with_auth'   => $this->config['auth']['with_auth'],
                // 验证类型，password=密码验证，只在进入时做密码验证
                'headers_key' => $this->config['auth']['headers_key'],
            ];
        }

        return json($this->config);
    }

    /**
     * 验证身份
     */
    public function verifyAuth()
    {
        $config       = config('apidoc') ? config('apidoc') : config('apidoc.');
        $this->config = array_merge($this->config, $config);
        $request      = Request::instance();
        $params       = $request->param();
        if ($this->config['auth']['with_auth'] === true) {
            // 密码验证
            if (md5($this->config['auth']['auth_password']) === $params['password']) {
                $token = md5($params['password'] . strtotime(date('Y-m-d', time())));
                return json(array("token" => $token));
            } else {
                throw new \think\Exception("密码不正确，请重新输入");
            }
        }
        return json($params);
    }

    public function verifyToken()
    {
        if (!empty($this->config['auth'])) {
            if ($this->config['auth']['with_auth'] === true) {
                $token = $this->request->header($this->config['auth']['headers_key']);

                if ($token === md5(md5($this->config['auth']['auth_password']) . strtotime(date('Y-m-d', time())))) {
                    return true;
                } else {
                    throw new \think\exception\HttpException(401, "身份令牌已过期，请重新登录");
                }
            }
        }
        return true;
    }

    /**
     * 获取接口列表
     * @return array
     */
    public function getList()
    {
        $config       = config('apidoc') ? config('apidoc') : config('apidoc.');
        $this->config = array_merge($this->config, $config);
        // 验证token身份
        if ($this->config['auth']['with_auth'] === true) {
            $tokenRes = $this->verifyToken();
        }

        $params = $this->request->param();

        $version = "";
        if (!empty($params) && !empty($params['version'])) {
            $version = $params['version'];
        }
        $cacheFiles = [];
        $cacheName  = "";
        if ($this->config['with_cache']) {
            // 获取缓存数据
            $cachePath = "../runtime/apidoc/" . $version;
            if (file_exists($cachePath) && $params['reload'] == 'false') {
                $cacheFilePath = "";
                $filePaths     = glob($cachePath . '/*.json');
                if (count($filePaths) > 0) {
                    $cacheFilePath = $filePaths[count($filePaths) - 1];
                }
                if (!empty($params) && !empty($params['cacheFileName'])) {
                    // 前端传入的缓存文件名
                    $cacheFileName = $params['cacheFileName'];
                    $cacheFilePath = $cachePath . "/" . $cacheFileName . '.json';
                }

                if ($cacheFilePath && file_exists($cacheFilePath)) {
                    $fileContent = file_get_contents($cacheFilePath);

                    if (!empty($fileContent)) {
                        $fileJson  = json_decode($fileContent);
                        $list      = $fileJson;
                        $cacheName = str_replace(".json", "", basename($cacheFilePath));

                    } else {
                        $list = $this->getApiList($version);
                    }
                } else {
                    // 不存在缓存文件，生成数据并存缓存
                    $list = $this->getApiList($version);
                    // 生成缓存数据
                    $cacheName = $this->createJsonFile($list, $version);
                }

            } else {
                // 不存在缓存文件，生成数据并存缓存
                $list = $this->getApiList($version);
                // 生成缓存数据
                $cacheName = $this->createJsonFile($list, $version);
            }
            $filePaths = glob($cachePath . '/*.json');
            if (count($filePaths) > 0) {
                foreach ($filePaths as $item) {
                    $cacheFiles[] = str_replace(".json", "", basename($item));
                }
            }
        } else {
            $list = $this->getApiList($version);
        }
        if (isset($this->config['groups']) && count($this->config['groups']) > 0) {
            array_unshift($this->config['groups'], ['title' => '全部', 'name' => 0]);
        }
        $data = array(
            "title"      => $this->config['title'],
            "version"    => $version,
            "copyright"  => $this->config['copyright'],
            "responses"  => $this->config['responses'],
            "list"       => $list,
            "cacheFiles" => $cacheFiles,
            "cacheName"  => $cacheName,
            "groups"     => $this->config['groups'],
        );

        $res = [
            'code' => 0,
            'data' => $data,
        ];
        return json($res);

    }

    /**
     * 获取api接口文档
     */
    public function getApiList($version)
    {
        $config       = config('apidoc') ? config('apidoc') : config('apidoc.');
        $this->config = array_merge($this->config, $config);
        $list         = [];
        $controllers  = $this->config['controllers'];
        $versionPath  = "";
        if (!empty($version)) {
            foreach ($this->config['versions'] as $item) {
                if ($item['title'] == $version && !empty($item['folder'])) {
                    $versionPath = $item['folder'] . "\\";
                }
            }
        }
        foreach ($controllers as $k => $class) {
            $class = "app\\" . $versionPath . $class;
            if (class_exists($class)) {
                $reflection = new \ReflectionClass($class);
                $doc_str    = $reflection->getDocComment();
                $doc        = new \addons\apidoc\library\Parser($this->config);
                // 解析控制器类的注释
                $class_doc = $doc->parseClass($doc_str);

                // 获取当前控制器Class的所有方法
                $method        = $reflection->getMethods(\ReflectionMethod::IS_PUBLIC);
                $filter_method = array_merge(['__construct'], $this->config['filter_method']);
                $actions       = [];
                foreach ($method as $j => $action) {
                    // 过滤不解析的方法
                    if (!in_array($action->name, $filter_method)) {
                        // 获取当前方法的注释
                        $actionDoc    = new \addons\apidoc\library\Parser($this->config);
                        $actionDocStr = $action->getDocComment();
                        if ($actionDocStr) {
                            // 解析当前方法的注释
                            $action_doc = $actionDoc->parseAction($actionDocStr);
//                                $action_doc['name'] = $class."::".$action->name;
                            $action_doc['id'] = $k . "-" . $j;
//                                // 解析方法
                            $actions[] = $action_doc;
                        }
                    }
                }
                $class_doc['children'] = $actions;
                $class_doc['id']       = $k . "";
                if (empty($class_doc['title']) && empty($class_doc['controller'])) {
                    $class_doc['title'] = $controllers[$k];
                }
                $list[] = $class_doc;
            }
        }
        return $list;
    }

    /**
     * 获取文件夹内的所有文件
     * @param string $class
     * @param string $action
     *
     * @return array|bool
     */
    protected function listDirFiles($app, $isapp = true)
    {
        $arr  = [];
        $base = base_path();
        if ($isapp) {
            $dir = $base . $app;
        } else {
            $dir = $app;
        }

        if (is_dir($dir)) {
//如果是目录，则进行下一步操作
            $d = opendir($dir); //打开目录
            if ($d) {
                //目录打开正常
                while (($file = readdir($d)) !== false) {
                    //循环读出目录下的文件，直到读不到为止
                    if ($file != '.' && $file != '..') {
                        //排除一个点和两个点
                        if (is_dir($dir . '/' . $file)) { //如果当前是目录
                            $arr = array_merge($arr, self::listDirFiles($dir . '/' . $file, false)); //进一步获取该目录里的文件
                        } else {
                            if (pathinfo($dir . '/' . $file)['extension'] == 'php') {
                                $arr[] = str_replace([$base, '/', '.php'], ['', '\\', ''], $dir . '/' . $file); //进一步获取该目录里的文件
                            }
                        }
                    }
                }
            }
            closedir($d); //关闭句柄
        }
        asort($arr);
        return $arr;
    }

    /**
     * 创建接口参数缓存文件
     * @param $json
     * @param $version
     * @return bool|false|string
     */
    protected function createJsonFile($json, $version)
    {
        if (empty($json)) {
            return false;
        }
        $fileName    = date("Y-m-d H_i_s");
        $fileJson    = $json;
        $fileContent = json_encode($fileJson);
        $dir         = "../runtime/apidoc/" . $version;
        $path        = $dir . "/" . $fileName . ".json";
        //判断文件夹是否存在
        if (!file_exists($dir)) {
            mkdir($dir, 0777, true);
        }
        $myfile = fopen($path, "w") or die("Unable to open file!");
        fwrite($myfile, $fileContent);
        fclose($myfile);
        return $fileName;
    }
}